body{
    margin: 0;
    padding: 0;
}

.container{
    width: 600px;
    padding:20px;
    border-radius: 10px;
    background-color: rgb(204, 204, 204);
    margin: 200px auto 0;
}
.container h2{
    text-align: center;
}
.form-group{
    margin-top: 20px;
    font-size: 18px;
}

.form-group.error input{
    border-color: red;
}
.form-group.success input{
    border-color: green;
}

.form-group label{
    display: inline-block;
    width: 100px;
    text-align: right;
}
.form-group input{
    width: 300px;
    height: 30px;
    border: none;
    border: 2px solid transparent;
}
.help{
    font-size: 14px;
    margin-left: 10px;
}
.form-group.error .help{
    color: red;
}
.form-group.success .help{
    color: green;
}
